Related Experiment Video
Updated: Apr 11, 2026

The Benthic Exchange of O2, N2 and Dissolved Nutrients Using Small Core Incubations
Published on: August 3, 2016
The effects of salinity on coupled nitrification and aerobic denitrification in an estuarine system
Mengfan Yang1, Dongmei Xue2, Fanqiao Meng3
1Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China E-mail: xuedongmei@gmail.com; Urban and Environmental Science College, Tianjin Normal University, Tianjin 300387, China.
Abstract:
Salinity has significant effects on nitrification and denitrification processes, particularly in estuarine systems. A dissolved oxygen-enriched river and its estuary in northern China were selected to investigate the impact of salinity gradients (0.6, 4, 7.6, 11.4 and 14.7‰) obtained from the mixing of river samples and estuarine samples with different proportions on coupled nitrification and aerobic denitrification via incubation experiments (35 and 10 °C). Results indicated that: (a) nitrification and coupled nitrification-aerobic denitrification occurred for all treatments, which resulted in NO3- being either accumulated or removed at the end of the incubation; (b) a suitable range of salinity is 4.0-11.4‰ for nitrification and 4.0-7.6‰ for coupled nitrification-aerobic denitrification; and (c) the relatively higher temperature (35 °C) can effectively stimulate N transformation processes compared to the lover temperature (10 °C) in the incubation experiment.
More Related Videos
Related Concept Videos
Marine Microbial Ecology
Metabolism of Chemolithotrophs
Freshwater Microbial Ecology
Ionic Strength: Effects on Chemical Equilibria
In this solution, the primary...
The Nitrogen Cycle
Inorganic Nitrogen Assimilation

